Putter head



FIG. 1 is a rear perspective view of the ornamental design of a putter head showing my new design;

FIG. 2 is a rear view of the putter head;

FIG. 3 is a front view of the putter head;

FIG. 4 is a heel end view of the putter head;

FIG. 5 is a toe end view of the putter head;

FIG. 6 is a top view of the putter head; and,

FIG. 7 is a bottom view of the putter head. 

The ornamental design for a putter head, as shown and described. 